Propagation of seismic waves through saturated soft clay deposits: Constitutive and numerical modeling

Seidalinov, Gaziz; Taiebat, Mahdi

doi:10.1201/b17435-46

Cited by 3 publications

(5 citation statements)

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“…Wave Propagation analysis can be defined as the seismic wave propagation from the bedrock to the earth's surface. Several studies on wave propagation have been carried out [6,8]. In this study, an analysis was carried out using the non-linear earthquake response analysis method.…”

Section: Methodsmentioning

confidence: 99%

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Seismic hazard on West Bandung district using non-linear earthquake response analysis

et al. 2021

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West Bandung District is one of the government areas that grow rapidly in West Java. Here several infrastructures such as Highspeed Rail Development, Modern Residences, Tourist Attractions Area, and International Retail Company supply major contributions to economic development. Rapid construction in Bandung Basin caused the government to pay attention to risk factors, especially building structures. One of the natural hazards that must be considered is the presence of an active Lembang fault. Therefore, there is a need for a study that takes into account how the earthquake waves damaged the buildings. In this study, an analysis of the soil dynamics due to earthquake ground motion from bedrock was carried out. The analysis is carried out using the wave propagation method, which is a non-linear analysis of the soil response. The research was conducted at 12 points locations in West Bandung District. As the result, the location with the highest PGA surface value is in the Mekar Jaya area, while the lowest risk is found in the Cililin area. Furthermore, this study provides scientific information on seismic hazards to support government disaster risk reduction programs.

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Section: Methodsmentioning

confidence: 99%

“…The thickness of the clay layer is about 11.3 m. This condition influenced the PGA value on the surface. As the wave propagation is very high in clay materials [6].…”

Section: Peak Ground Acceleration On Surfacementioning

confidence: 99%

Seismic hazard on West Bandung district using non-linear earthquake response analysis

et al. 2021

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“…If the maximum of the computed errors exceeds a specified tolerance, substepping of the input strain increment is employed. This approach was proposed in the original work of Sloan et al 33 Details of the application of this integration technique to the SANICLAY class of models are presented in Seidalinov, 34 which served as the basis for the numerical implementation followed in the present study. The resulting constitutive driver is compatible with the OpenSees finite element program.…”

Section: Multiaxial Formulationmentioning

confidence: 99%

“…In these models, improved predictions of the cyclic stiffness degradation were obtained with the inclusion of a damage mechanism producing additional plastic deviatoric strains with cycles. A SANICLAY model with BS, damage, and destructuration was implemented into the OpenSEES program and used for nonlinear site response analysis 28 and multidirectional cyclic shearing 29 . However, with the exception of the work by Palmieri et al., 30,31 which represents a precursor of this work, the currently existing SANICLAY model extensions for cyclic loading, do not account for the presence of a stress and/or strain threshold and, therefore, always predict cyclic stiffness degradation regardless of the applied cyclic shear amplitude.…”

Section: Introductionmentioning

confidence: 99%

An activation mechanism for cyclic degradation of clays in bounding surface plasticity

Palmieri,

Taiebat

2024

Num Anal Meth Geomechanics

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During undrained cyclic loading, clayey soils experience substantial stiffness and strength degradation when subjected to shear amplitudes exceeding a critical threshold. This paper presents an enhanced bounding surface rate‐independent plasticity model, an evolution of the previous SANICLAY model, tailored to capture this specific behavior during cyclic loading. A distinguishing feature of the proposed model is the introduction of an activation mechanism. This mechanism triggers degradation modeling based on the applied cyclic shear amplitude. To measure this amplitude, the activation mechanism incorporates a novel state variable that serves as a proxy for the applied cyclic stress. The effectiveness of the proposed model is demonstrated by comparing it to experimental data from various materials subjected to cyclic shearing under undrained conditions. The study encompasses a broad range of constant strain or stress amplitudes. Compared to the reference model, the proposed model exhibits improved predictive accuracy for the stress‐strain response of clays at small amplitudes of cyclic loading and large number of cycles. Furthermore, it accounts for strength degradation due to cyclic loading.

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“…Submitted January 2017; Published January 2018. http://dx.doi.org/10.1016/j.compgeo.2017.05.013 3 destructuration processes [5]. Capabilities of the SANICLAY model and its variants have been illustrated in successful simulation of drained and undrained responses of normally consolidated and overconsolidated sensitive clays [6,7] and applications in boundary value problems [8,9].…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of Ballina test embankment on a soft structured clay foundation

Rezania

Nguyen

Zanganeh

et al. 2018

Computers and Geotechnics

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Propagation of seismic waves through saturated soft clay deposits: Constitutive and numerical modeling

Cited by 3 publications

References 1 publication

Seismic hazard on West Bandung district using non-linear earthquake response analysis

Seismic hazard on West Bandung district using non-linear earthquake response analysis

An activation mechanism for cyclic degradation of clays in bounding surface plasticity

Numerical analysis of Ballina test embankment on a soft structured clay foundation

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